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'Mysterious Moose Mountain' - pt.I - 1:35n2
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 Posted: Fri Jul 8th, 2016 06:26 pm
   
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Si.
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<<< Continued from previous page.

Description of Tri-ang automatic unloading. :mex:





Last edited on Fri Jul 8th, 2016 06:37 pm by Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
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 Posted: Fri Jul 8th, 2016 06:28 pm
   
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Si.
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L:

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Fri Jul 8th, 2016 10:30 pm
   
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W C Greene
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Howdy Si, are you going to dump from one car to another like the instructions? If so, how about from a NG car to a waiting standard gauge hopper below. Just something else to build....

Woodie



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 Posted: Mon Jul 11th, 2016 12:09 am
   
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Si.
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Howdy Woodie. :cb:

I did wonder if I could unload from one car to another.
Or maybe to a barge.
Perhaps to an ore-bin.

Mmm ... ? L:

I had sketched a trackplan for a mine-area I quite liked...
...just before deciding to try and use the operating ore-cars. :!:

So this very rough thumbnail drawing doesn't incorporate any 'unloading' as such.



Anyway, no great rush at the moment.
My spare time is going on the carbuilding etc. first. :thumb:

Who knows, when I've got more 'wheelie' things...
...it could be time to bash some benchwork together ! :P

:moose:

Si.

P.S. My 'setrack' test-track is working out pretty good for now...
...problems with the Shay though; as I thought there would be !
( slightly tight radius ... Hornby inner-curve sections ... sigh !! )

:us:



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

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http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Mon Jul 11th, 2016 01:39 am
   
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oztrainz
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Hi Si,
Have you tried running the Shay with the driveshaft on the outside of the curve?
A quick search lists Radius 1 as 371mmm = 14.6"
Radius 2 = 438 mm = 17.2 mm

From a datafile of locomotives put together for the On30 Conspiracy Yahoo Group, the following criteria are used
"The “Practical Operating Radius” specs are known to work with each piece of equipment
listed.
The “Absolute Minimum Reported Radius” info is the lowest successful radius reported,
but is NOT RECOMMENDED, except under EXTREME CIRCUMSTANCES. As the curve radius gets tighter, the more critical it becomes to make sure that your trackwork and rollingstock is mechanically perfect. If you are prone to taking shortcuts when laying your
track and tuning locos/cars, or are not mechanically inclined, do yourself a favour, don’t “push the envelope”, try to get the largest “Minimum Radius” you can."

Now having said that the Practical Operating Radius for the 0n30 Shay is listed at 18" radius and the Absolute Minimum Reported radius is 15".

Now what actually sets the minimum radius for the Shay is that the square section of the driveshafts bottom out in their sleeves.

A suggestion - for a track that only hooks the one way like yours mostly does in your plan, you might be able to file a "smidgeon" off the length of the driveshafts. Just be careful how much you take off or your dive shaft might fall out on the opposite curve or on straight track if you remove too much length.

Last edited on Mon Jul 11th, 2016 01:40 am by oztrainz



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 Posted: Mon Jul 11th, 2016 05:18 pm
   
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Si.
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Hi John.

Thanks for that.

On the Hornby inner-radius, as you say, 14.6" ...
... the Shay will 'partly' run.
The front-truck ( shorter ) drive-shaft 'pops out' though ...
... when running cylinders on the OUTSIDE of the radius.

I got these curves for a continuous-run test-track.
The only thing I won't be able to 'test' is the Shay.
( I ain't planning a 1:35n2 U.P.'Big Boy' any time soon !! )

My Porter, cars, Athern-chassis etc. etc. are all OK.

Don't worry John !
I have decided to draw & make curves/switches all at 18" when the time comes ...
... shelf-layout style.

I figure it just ain't worth the agro. thinking 15 or 16" MIGHT be OK.
The 18" curves WILL be OK !

The Hornby curves were new, but VERY CHEAP on eBay.
I had thought about fixing them to a simple board.
But they are so easy to put together/take-apart, why bother ?
Mmm ... ?

I've never had a 'Train Set' before ...
... it's kinda FUN !!

:moose:

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Mon Jul 11th, 2016 07:46 pm
   
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W C Greene
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Si, the 15" min radius is probably prudent. I had one place on the old layout with about 13" r and the Shays really didn't like it! Early on, I replaced the driveline parts (sliding boxes and universal joints) with PSC parts made for their 13 ton Shay. Whatta job that was but what a difference it made! After all these years, the plastic gear train wore out, Bachman has new gears available, I would suggest getting some for "the future". These gears are for the gearbox, not the drive pinions. Years ago, a certain Mr Kephart made me some sets of brass pinions...before NWSL or Bachmann had replacements. After all the new gears, the locos run like they did 15 years ago...very nice.

Ta ta...
Woodie



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 Posted: Tue Jul 12th, 2016 01:31 am
   
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oztrainz
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oztrainz wrote:
Hi Si,
Have you tried running the Shay with the driveshaft on the outside of the curve?

Now what actually sets the minimum radius for the Shay is that the square section of the driveshafts bottom out in their sleeves.
...


What I forgot to add about the driveshaft bottoming out only applies when the cylinders are on the inside of the curve.

You've already found out what happens if the cylinders are on the outside of the curve on tight curves - you run out of length on the internal square-section driveshaft. On tight curves the bogies turn further and more length is required from the driveshaft. Eventually you reach a point of no more driveshaft length available and the drive shaft falls out of its retaining collar :bang:



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 Posted: Thu Jul 14th, 2016 04:28 pm
   
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Si.
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" Years ago, a certain Mr Kephart made me some sets of brass pinions "

Howdy Woodie :cb:

I hear Kephart Ltd. are the Rolex of railroading !!

I can imagine Herb living atop an Alp, making precision mechs. :brill:

I can't wait to see the video of your boiler door opening...
...& the Cuckoo flying out on a spring !!

;)

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Thu Jul 14th, 2016 04:38 pm
   
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Si.
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" What I forgot to add about the driveshaft bottoming out only applies when the cylinders are on the inside of the curve "

Hi John :wave:

They are probably doing both a bit of 'bottoming' as well as 'popping' !

My test wasn't rocket-science...
...a 10 second countdown was enough to determine :td: a bogie bogie !!

I'm sure that the Bachmann Shays ain't made 'exactly' the same over the years.
I'm not even gonna DREAM of a radius less than 18" !

I'll live with the test-track though...
...just not running the Shay.

:moose:

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top


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